Teaching plan of safety theme class meeting 1 1. Teaching purpose:
Through the study of this lesson, students can fully understand the causes of electric shock and master the principles of safe use of electricity. Improve students' awareness of self-help.
Second, the teaching content:
Learn the basic knowledge of safe use of electricity, self-help escape methods and first-aid measures.
Third, the teaching focus:
Understand the causes and forms of electric shock and improve the awareness of safe use of electricity.
Below, let's learn the basic knowledge of safe electricity use and the escape method of self-help.
Fourth, the teaching process:
(a) electric shock and the risk of electric shock.
The human body is a conductor. When voltage is applied to human body, current will flow through human body. When the current passing through the human body is small, people have no feeling; When the current passing through the human body is slightly larger, people will feel numb. When the current reaches 8 ~1000 ma, it is difficult for people to get rid of the voltage, thus causing dangerous electric shock accidents. When the current reaches 100 mA, people will suffocate and stop their heartbeat in a short time. Therefore, when the voltage applied to the human body reaches a certain value, an electric shock accident will occur.
Generally, the voltage not higher than 36V is safe for people, which is called safe voltage. The voltage between the live wire and the neutral wire of lighting electricity is 220 volts. Never touch the live wire and the neutral wire at the same time. The neutral line is grounded, so the voltage between the live wire and the earth is also 220V V V. When the live wire is connected to the earth, you must not touch it.
(2) Several types of electric shock.
(1) Electric shock in home circuit: people touch live wire and neutral wire or live wire and earth.
(1) The reason why people contact the fire line by mistake.
A, the insulation of the live wire is damaged, and its bare place directly contacts the human body, or contacts other conductors, and indirectly contacts the human body.
B, wet air conduction, impure water conduction-wet hands touch the switch or get an electric shock in the bathroom.
C, the electrical shell is not grounded as required, and its internal live wire skin is damaged, touching the shell.
D after the zero line is disconnected from the front grounding part, the zero line part originally connected with the electrical appliance is connected with the live wire through the electrical appliance and converted into the live wire.
The reason why people think they are insulated from the earth is actually connected with it.
A, people standing on an insulating object, but with a hand wall or other grounding conductor or people standing on the ground to help him.
B. People stand on wooden desks and chairs, but wooden desks and chairs become conductors due to humidity and other reasons.
③ Precautions for avoiding electric shock in home circuits.
A, switch the live wire, to avoid the zero line disconnected from the grounding point when the switch is turned on.
B, when installing the screw cap, the live wire is connected to the center, and the zero wire is connected to the outer skin.
C, indoor wires should not be in contact with other metal conductors, and clothes and articles should not be hung on the wires. When the wires are damaged by aging, they should be repaired in time.
D, electrical grounding must be in accordance with the requirements.
E, don't wet the switch, change a light bulb, plug it in and unplug it.
F, don't stand on the wet tables and chairs and touch the fire line.
G, before touching the wire, turn on the main switch. When live operation is needed, pay attention to insulation from the ground. First, check whether the contact is connected with the live wire with a pencil, and operate with one hand as much as possible.
(2) High voltage electric shock.
High-voltage charged bodies can not only contact, but also can not approach. There are two kinds of high-voltage electric shock:
① Electric shock by arc: When the distance between human body and high-voltage charged body reaches a certain value, discharge will occur between high-voltage charged body and human body, resulting in electric shock.
② Step voltage electric shock: When the high-voltage line falls to the ground, there is voltage between points at different distances from the high-voltage line. When there is enough voltage between people's feet, step voltage electric shock will occur.
The danger of high voltage electric shock is more dangerous than 220 volts, so when you see the sign of "high voltage danger", don't go near it. Outdoor antennas must be far away from high-voltage lines. Flying kites, catching dragonflies and climbing poles are not allowed near high-voltage lines.
(3) Measures after electric shock accident
1. If someone is found electrocuted, which of the following measures is correct?
A, quickly pull the electric shock by hand to make it leave the wire.
B, use iron bars to separate people from the power supply.
C, use a dry stick to separate people from the power supply.
D, quickly turn on the switch and cut off the power supply.
E. Move the person who gets an electric shock to a place with good air circulation.
F, if breathing stops, immediately carry out artificial oxygenation.
Through discussion, students should make it clear that the principle of dealing with electric shock accidents is to get the electric shock victim out of the power supply as soon as possible, so as not to make others get an electric shock again when dealing with accidents, so A and B are absolutely wrong.
2. If a fire occurs due to short circuit of wires, can it be put out with water immediately? Why?
Please make it clear: no, because water can conduct electricity, which will aggravate the disaster. The power supply must be cut off quickly, and the flames must be put out with sand and fire extinguishers.
(4) the principle of safe use of electricity
1, electrical equipment installation meets technical requirements,
2. Don't touch charged bodies higher than 36V.
3. Don't go near high-voltage charged bodies.
4, don't get wet electrical appliances,
5. Do not damage the insulators in electrical equipment.
(5) Summary
As long as you are careful everywhere, pay attention to safety, master the knowledge of self-help and self-care, exercise your self-care and self-help ability, and bravely deal with all kinds of abnormal situations or dangers, you can grow up healthily.
Safety theme class meeting lesson plan 2 Activity purpose:
1. A class meeting was held in view of the incident that four students in our school placed obstacles on the railway, which caused the train to be forced to stop. I hope that through this theme class meeting, I can understand railway safety and master some common sense of railway safety, so as to arouse students' attention to railway traffic safety and enhance their awareness of traffic safety.
2. By studying railway safety knowledge, students can establish the concept of self-protection and self-rescue, and form the consciousness of self-protection and self-rescue.
Activity flow:
Introduction: Explain the significance of this activity.
1, the teacher introduced: With the gradual development of science and technology, transportation is also increasingly developed. In recent years, people's living standards have been greatly improved, and people's travel modes have become increasingly diversified. However, the development of modern transportation brings people endless convenience, but also brings a major problem that can not be ignored-traffic safety.
2. Teacher: The long summer vacation is coming. Because we live near the railway line, we often need to "deal" with the railway. In addition, many students have to travel with their relatives by train during holidays. In order to strengthen students' awareness of railway traffic safety and personal safety prevention, the railway traffic safety course is specially set up.
Safety theme class meeting teaching plan 3 1. Class meeting time: May 20xx 15.
Class meeting place: Class 52 classroom
Participants: the whole class and the class teacher.
4. Moderator: class teacher, monitor.
Verb (abbreviation of verb) class meeting theme: safety education for earthquake prevention and disaster reduction
Purpose of the activity: Through this activity, students can learn about earthquake knowledge, how to save themselves and each other and how to prevent earthquakes. Let students know how to prevent earthquakes and reduce disasters and minimize losses.
Seven, the main content:
1, introducing earthquake knowledge and the basic situation of earthquake work in China;
2. Let students learn to judge the precursors before a big earthquake;
3. Let students know what preparations should be made before the earthquake and the main points of shock absorption;
4. Organize students to escape and save themselves and each other in the simulated earthquake.
Eight, form:
Show pictures and materials of injuries caused by Sichuan earthquake, introduce the host's attempts to prevent and reduce earthquake disasters, organize students to discuss and exchange ideas on how to prevent and reduce earthquake disasters, and organize students to escape and self-help and mutual rescue drills in simulated earthquakes.
Nine. Activity process reference
1, the host opens the theme class meeting.
2. The moderator introduced the general knowledge of earthquake and the basic situation of earthquake work in China.
3. Organize students to learn about earthquake prevention and disaster reduction, and understand the basic situation of Sichuan earthquake.
4. The class teacher organizes students to escape and save themselves and each other in the simulated earthquake.
5. The host announced the end of the class meeting.
X. Overview of activities:
1, activity result:
Through this activity, the students learned the common sense of earthquake prevention and disaster reduction, understood the basic situation of the development of earthquake work in China, and learned the life skills of how to escape and save themselves and each other in an earthquake. Through this activity, the students also learned the details of the Sichuan earthquake, which shocked and impacted their hearts and inspired their patriotic enthusiasm and love. During the whole activity, students not only learned the common sense of earthquake prevention and disaster reduction, but also improved the ability of cooperation and mutual assistance, emergency response and data collection, and cultivated patriotic enthusiasm and love.
2. Disadvantages:
(1) Class team activities are simple and lack of innovation.
(2) In the process of organizing students' escape and self-help and mutual rescue activities in the simulated earthquake, the order was a bit chaotic, but it was well controlled under the maintenance of the host.
(3) When organizing discussion and exchange, students are not enthusiastic enough to speak, which shows that students are not fully prepared.